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Air/Vapour Barrier:
Rub-R-Wall
Airtight
Advanced
Coatings Inc.
Head Office:
15288 Hwy 12,
P.O. Box 670
Midland,
Ontario L4R 4P4
Toll Free: 1-800-787-8059
Tel:
(705)534-4760
Fax: (705)534-4125
Branch Office:
22 Oxenden Cres.
Etobicoke, Ontario
M9C 4H4
Toll Free: 1-800-730-0814
Tel:
(416)410-0814
Fax: (416)695-2480
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Rub-R-Wall specifications can be
downloaded here:
Rub-R-Wall
Specifications
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You will need Adobe Acrobat to open this
file. |
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Basic Use: Primarily intended as
a non-accessible air/vapour barrier for all types of cavity wall
construction. (e.g. over exterior face of inner wythe of masonry
cavity wall)
New construction or retrofit.
For
commercial, industrial and institutional
applications.
Composition and
Materials:
Rub-R-Wall Airtight is a 100% rubber copolymer
liquid applied air/vapour barrier membrane (hydrocarbon polymers in
hydrocarbon solvents) that is spray applied to the substrate by
manufacturer approved applicators.
Transition joints in the
substrate to receive Rub-R-Wall Airtight are first sealed with
Rub-R-Wall SA, a self-adhering, cold applied composite sheet
membrane (transition strip). These strips, approximately 150 mm (6")
wide, are located at beams, columns, changes in substrate material,
and similiar joints or connections to provide continuity of the
air/vapour barrier assembly.
Rub-R-Wall Airtight meets all of
the principal requirements and design criteria for a properly
constructed air barrier for the building envelope, namely:
- resistance to air flow;
- structural soundness, capable of resisting wind and other
loads, over its expected life span;
- continuity throughout the building envelope;
- be permanent if concealed.
Thickness: 1
mm (40 mils)
Application Rate (over standard concrete
block): 2.6 to 3 m²/4.5 L (28 to 32 sq
ft/gal)
Colour:
Yellow
Limitations: Not designed to perform as
a permanently exposed membrane.
Applicable Standards: Meets and exceeds
the National Research Council (NRC) Type III Air Leakage
requirements. Meets the requirements of ASTM E-96 Type I water
vapour permeance. See the Physical Properties chart
below.
Environmental Considerations: Rub-R-Wall
Airtight membrane is non-toxic, non-carcinogenic and will not
contaminate ground water.
Preparatory Work:
Refer to
the Examination section of the specification for substrate
requirements by others (new construction).
Under the work of
the air/vapour barrier section of work, the following preparatory
requirements include:
1. Removing loose or foreign matter
which might impair adhesion of materials.
2. Filling any
voids with a proprietary mastic substrate filler (Rub-R-Wall
Airtight Mastic).
3. Cleaning and priming substrate
joint/connection surfaces and applying Rub-R-Wall SA "transition
strip."
Methods: Rub-R-Wall Airtight is applied
using manufacturer approved applicators who undergo extensive
training and are monitored for quality performance.
Applied
over outer surface of inner whythe of masonry or other substrate,
Rub-R-Wall Airtight is sprayed on to surfaces using alternating
horizontal and vertical passes to ensure complete coverage of
substrate and Rub-R-Wall SA material. Masonry anchors or other
penetrations are sealed air tight.
Transition joints are
sealed using Rub-R-Wall SA over firm bearing at beams, columns,
changes in substrate material and similiar joints or connections
including at window frame perimeter and door
frames.
Generally strips are applied so that a minimum of 75
mm (3") coverage is achieved over both substrates, and with 25 mm
(1") of full contact over window or door frames.
Rub-R-Wall
Airtight is applied within the recommended application temperature
range. It may be applied successfully at temperatures as low as
-15°C (5°F).
Airless spray equipment having a minimum
pressure of 20 684 kPa (3000 psi) is used to apply Rub-R-Wall
Airtight. The coverage rate of the completed membrane application is
2.6 to 3 m²/4.5 L (28 to 32 sq ft/gal) which provides a seamless,
monolithic surface with a final thickness of 1 mm (40 mils).
Typically, one crew can apply approximately 372 m² (4000 sq ft) of
area per day. Drying time of Rub-R-Wall Airtight is approximately
one hour, given average conditions and standard thickness.
A
spray or board type cavity wall insulation is then adhered to the
Rub-R-Wall air/vapour barrier membrane after an initial set time of
approximately 1 to 2 hours, and while the membrane is still tacky,
to prevent convection currents occuring behind the insulation. Once
applied, the insulation is firmly and permanently adhered into place
and cannot be removed. Wedges or clips, normally used to secure the
insulation may be reduced or eliminated.
Building
Codes: Rub-R-Wall Airtight meets the intent of Part 5
(Section 5.3 Control of Air Leakage, Subsection 5.3.1 Air Barriers)
of the National Building Code (NBC).
(Imperial Measure. Metric chart
available upon request)
| Property |
Test Method |
Test Results |
| Air Leakage Rate |
ASTM E283 |
0.00220 L/s.m² (considerably lower
than the 0.05 L/s.m² value for a type III air barrier as
proposed by National Research Council) |
| Elongation (%) |
ASTM D412 (die C) |
1800% |
| Low-Temperature Flexibility |
Bend around 0.5 inch mandrel |
Flexible to -20°F (-29°C) |
| Abrasion Resistance |
700 PSI on .06" x .06" point moving
1" per sec. |
Less than 0.10% membrane loss |
| Asphalt Content |
Non Applicable |
0.0% |
| 180° Peel Adhesion |
Metal Plate |
18 lbs/inch |
| Crack Bridging |
ASTM 836 |
Exceeds ten cycles to 1/8 inch at
-15°F (-26°C) |
| Water Vapour Permeance |
ASTM E96 (water method) |
12.09 ng/Pa.s.m² for 40 mil (1 mm)
dry coating grams/ft²/hr in Hg |
| Liquid Water Absorption |
ASTM D95 |
Less than 0.5% (weight) |
| Resistance to Bacteria |
ASTM D4299-83 (modified) |
No attack |
| Resistance to Gust Wind Load |
ASTM E330 |
Resists a suction pressure of 3000
Pa (62.8 lbs/ft²) maintained for 10 seconds with no
delamination and no increase in air leakage rate when tested
at 75 Pa (1.6 lbs/ft²) |
| Resistance to Sustained Wind Load
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ASTM E283 |
Resists a suction pressure of 1000
Pa (20.9 lbs/ft²) maintained for 10 seconds with no
delamination and no increase in air leakage rate when tested
at 75 Pa (1.6 lbs/ft²) |
| Resistance to Chemical Attack |
Visual |
Unaffected by chemicals in
concentrations typically found in soils |
| Solvent Resistance |
Visual |
Exceeds performance of modified
asphalts |
| Life Expectancy |
ASTM D412 and ASTM D2240 |
Exceeds 100 years |
| Density |
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0.9 kg/L
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*Tests conducted by the Ortech
Corporation of Mississauga, Ontario and the Akron Rubber Development
Labratory Inc., Akron, Ohio. Copy of test reports available upon
request.
Availability: Rub-R-Wall Airtight is
available across Canada and throughout the U.S., usually shipped
from stock. Contact Advanced Coatings Inc. for a list of
dealers/applicators.
Cost: A current price list
is available from dealers/applicators along with the standard
conditions of sale.
The
information herein is the best available relating to Rub-R-Wall
Airtight. The recommendations contained herein are based on tests
believed to be reliable. We warrant our products to be of
merchantable quality and suitable for the purpose for which they are
intended. We do not make any other warranties, expressed or implied,
statutory or otherwise.
Rub-R-Wall Airtight membrane does not require
any maintenance. Damaged areas are easily repaired by spraying over
affected areas. Cold joints or recoating is not a problem; newly
applied material easily blends with existing Rub-R-Wall Airtight
material to provide a monolithic membrane.
For technical support call Advanced
Coatings Inc. toll free.
Head Office:
1-800-787-8059
Branch Office: 1-800-730-0814
Specification
assistance.
Site advice and recommendations.
Construction
Specifications Canada (CSC) Tek-Aid 07195 Air Barriers (Digest, and
Master Specification).
National Master Specification (NMS)
Section 07196 Air Barriers (Descriptive/Proprietary).
"An Air
Barrier for the Building Envelope, National Research Council Canada,
Proceedings Building Science Insight '86."
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